Telegraph-transmitter.



C. BELL.

TELEGRAPH TRANSMITTER. APPLICATION FILED JUNE 21. v1915.

1,173,702. Patented Feb. 29, 1916.

2 SHEETS$HEET I.

as M C. BELL.

TELEGRAPH TRANSMITTER.

APPLICATION FILED JUNE 21,1915.

1 173,702; Patented Feb. 29, 1916.

2 SHEETS-SHEET 2- fig. 2 2767, a

C" BeZZ rrn CLAYTON BELL, OF CENTRALIA, MISSOURI.

TELEGRAPH-TRANSMITTER.

Application filed June 21, 1915.

To all whom it may concern:

Be it known that I, CLAYTON BELL, a citizen of the United States,residing at Centralia, in the county of Boone, State of Missouri, haveinvented certain new and useful Improvements in Telegraph-Transmitterszand I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to a telegraph transmitter.

An object of the invention resides in the provision of a transmitter inwhich a circuit is made and broken a plurality of times upon one manualactuation of the dot lever to produce a series of dots used in the Morsecode.

A further object of the invention resides in so constructing the devicethat it will be easily operated and will lessen the work of theoperator.

WVith these and other objects in view, such as will appear as thedescription progresses, my invention comprises the combination andarrangement of parts as set forth in and falling within the scope of theappended claims.

Referring to the drawings: Figure 1 is a plan view of my device. Fig. 2is a side elevation. Fig. 3 is a similar view looking at the oppositeside of the device. Fig. 4 is an end elevation. Fig. 5 is a section online 55 of Fig. 1. Fig. 6 is a section on line 66 of Fig. 1. Fig. 7 is asection on line 77 of Fig. 1. Fig. 8 is a fragmental detail of thecompound lever.

Referring to the drawing wherein like parts are indicated by likecharacters throughout the several views :In the embodiment of myinvention shown in the drawing, I have provided a metallic base 1 whichis supported by suitable rubber legs 2. Secured to the base 1 by meansof screws 3 is a spring holder 4 to which is attached, by means of abolt 5, a vibrator spring 6 to the end of which is attached a vibrator 7which is in the form of a rod and has a weight 8 adjustably mountedthereon, which weight may be held in any of its adjusted positions by aset screw 9. The adjustment of this weight will determine the rate ofvibration of the vibrator 7 and consequently the frequency of the dotsas will be later Specification of Letters Patent.

Patented Feb. 29, 1916.

Serial No. 35,374.

described. A limiting post 10 for the vibrator is mounted on the base 1adjacent the end of the vibrator and has an adjustable set screw 11mounted therein on which set screw a lock nut 12 is mounted. The end ofthe set screw 11 is provided with a point 13 of insulating material withwhich point the vibrator 7 contacts. The vibrator 7, the spring 6 andthe holder 4 are in electrical communication with the base 1. Mounted onthe base 1 and insulated therefrom is a post 14 which has a set screw 15adjustably mounted therein on which set screw is a lock nut 16 so thatthe set screw may be held in its adjusted positions. Secured to the post14 and insulated from the base 1 is a spring 17 having a contact point18 on the end thereof which is adapted to engage the contact point 19 onthe vibrator 7. The spring 17 includes a horizontally disposed U-shapedportion and a vertically extending shank. The end of the screw 15 bearsagainst the horizontal portion of the spring so that upon the adjustmentof the screw the spring will be moved so that the contact point 18 willbe adjusted with relation to the contact point 19 on the vibrator 7.Mounted on the base 1 is a binding post 20 in electrical communicationwith the base and a second binding post 21 insulated from the base.Extending from the binding post 21 to the post 14 is a bus bar 22 whichis insulated from the base. The binding posts 20 and 21 are adapted toreceive the ends of the line wires in the usual manner. Thus when thevibrator 7 is moved by the spring 6 so that the contacts 18 and 19 willengage each other a circuit will be set up from one line wire to thepost 21, through the bus bar 22 to the post 14, through the springs 17to the contact 18, to the contact 19, through the vibrator 7 and spring6 to the holder 4, through the base 1 to the binding post 20 and thenceto the other line wire.

In order that the engagement of the con tacts 18 and 19 may becontrolled, I have provided a vibrator releasing lever 23 which ispivoted on a pintle 24, which pintle is mounted in a bearing 25 on thebase and in an adjustable bearing 26 mounted on a bracket 27. The lever23 is provided with an arm 28 such as shown in Fig. 1 of the drawingwhich is adapted to engage the weight 8 upon the vibrator 7 and when inengagement with the said weight willprevent the movement of thevibratorf This arm 28 is normally held in engagement'with the weight 8by a coil spring 29 whichis attached to a set screw 30, which set screwis adjustably mounted on a post 31 and held in its adjusted position bya lock nut 32. The movement of the lever 23 away from the vibrator islimited by a set screw 33 which is adapted to contact with the lever, isadjustably mounted in a post 34 and held in its adjusted position by alock nut 35. In order that this lever 23 may be actuated I have pivoteda second-lever-36 on thepintle 24 which overlies the lever 23 and has astop member-37 secured to one face thereof, which stop member extendsdownwardly into contact with-the adjacent face'ofthe lever 23. Extendingfrom this stop member 37 is a pin 38 whichprojectsthrough a hole in thelever 23 and has ainut 39 on the end thereof. Interposed between thisnut 39 and the lever 23 is an expansion spring 40 which maintainsthestop member 37, normally,-in contact withthe lever 23. :Secured tothe other end of the lever 36 is a handle 41 and on the oppositeit'aceotthe lever .36 is a knob 42, which handle and knob are made ofsuitable insulating naterial .such as hard rubber. V

I Secured to the base 1 andinsulatedth'erefrom is a post 43 which hasacontact member 44 adjustably mounted thereon, which contact member isadapted to engage an alined contact 45 on the-end ofthe lever 36.Extending from the post 14 to thepost 43 is a bus bar 46 which isinsulated fromthe base 1. Secured to the post 43 and extending outwardlytherefrom in slight spaced relation to the base 1 is a clip 47. Pivotedto the base at 48 is a switch 49 which has a free end adapted to beforced between the clip 47 and the base 1 to complete the ci-rcuit whenthe device is not in use as will become apparent.

In using the device, when it is desired to send a series of dots it willonly be necessary for the operator to engage the handle 41 and move thesame in one direction at this time the stop member 37 on the lever 36,which lever, I will designate asthe dash lever for the sake ofconvenience, will engage the vibrator releasing lever 23 and theselevers36 and 23 will be moved together against thetension of the spring 29 sothat the arm 28 will disengage the weight 8. Upon the disengagement ofthe weight 8 the vibrator 7 will move, the spring 6 having previouslyheld the vibrator under tension. During this movement'of thevibrator 7the contact 19 thereon will intermittently engage the contact 18 on thespring 17 and the circuit previously described will be set up. It willonly be necessary for the operatorto maintain the pressureupon thehandiel until the number of times the contacts 18 and 19 haveengaged eachother is sufficientto produce the required number of dots. WVhen thishas taken place the handle 41 may be released-and the spring 2 9 willmove the levers 23 and 36 into their initial positionsand the arm 28into contact with engagementof-the contacts 18 and 19. It will thus beseen that to produce the required number otdots-onlyone movement of theoperators hand is necessary since, whenthe weight 8 is'released, thevibrator 7 will be caused to move to intermittently close the linecircuit.

l/Vhen it is desired to send a dash it is only necessaryifor theoperatorto apply force to the-knob 42 and move the same in a directionopposite to that in which-the handle 41 is moved. vAtthis timethedash'lever 36 will be swung toward the post 43 until the contact 45thereon engages the contact 44 on the post. This movement of the lever36 will take place against the action of, the spring 40,'which springwill be compressed to allow thelever 36to moveindependently of the lever23. Force must be applied to the knob 42 for only such time as isnecessary to produce one dash and when the knob is relieved ofthepressure the spring40 will return the lever 36 to its initial positionoverlying the lever 23. hen the contacts 44 and 45 engage, the circuitwill pass from the post 21 through the-bus bars 22 and 46 to the ,post43, through the lever 36 to the base 1, through the base .1 to thebinding post 20 through thezline wire to the binding post 21.

When the instrument is not in use the circuit may be'completed-by movingthe switch 49 so that it'contacts with the clip 47 and thus the circuitwill follow the last described circuit to the post 43 and thence throughtheswitch to the base.

From the foregoing description it will be seen that I have provided atelegraph transmitter which is of such construction that a number ofdots may be sent with but one manual operation. Specifically I haveprovided a vibrator which will close the circuit intermittently as manytimes as is desired by the operator to transmit dots.

While I have illustrated and described a particular embodiment of myinvention, I

have merely done so for the sake of convenlence and I do not wish to belimited toy that particular embodiment as it is obvious that numerouschanges may be made within the details of construction thereof withoutin any Way departing from the spirit of the invention or exceedingthe'scopeof the appended claims.

WVhat I claim is 1. In a telegraph transmitter, the combi nation with.a. vibrator, of a lever having van arm thereon adapted to engage thevibrator, a second lever mounted on the pivot of the first lever andmovable relative thereto, means on the second lever for engaging thefirst lever to cause the movement of the first lever when the secondlever is moved in one direction and resilient means for opposing themovement of the second lever independently of the first lever in theother direction.

2. In a telegraph transmitter, the combination with a vibrator, of alever for controlling the movement of the same, a second lever mountedon the pivot of the first lever and movable independently thereof, thesaid levers being movable together to release the vibrator and means forlimiting the independent movement of the second lever With relation tothe first lever.

3. In a telegraph transmitter, the combination with a vibrator, of alever for controlling the same, a second lever mounted on the pivot ofthe first lever and movable independently thereof, means on the secondlever for engaging the first lever to cause the movement of the latterin one direction and resilient means for opposing the independentmovement of the second lever, and resilient means adapted to coact withthe first mentioned resilient means to move the levers together toarrest the movement of the vibrator.

In testimony whereof, I aflix my signature, in the presence of twoWitnesses.

CLAYTON BELL.

WVitnesses:

C. IV. YOUNGER, HAROLD B. MAYES.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

